User talk:2600:1001:B007:BB31:9937:2ADB:1434:558F

December 2019
Hello, I'm Pdcook. I noticed that you added or changed content in an article, List of school shootings in the United States by death toll, but you didn't provide a reliable source. It's been removed and archived in the page history for now, but if you'd like to include a citation and re-add it, please do so. You can have a look at the tutorial on citing sources, or if you think I made a mistake, you can leave me a message on my talk page. Thank you. P. D. Cook Talk to me! 20:19, 12 December 2019 (UTC)
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